+. An aqueous solution at 25 °C has a H,O' concentration of 7. x 10 ° M. Calculate the OH concentration. Be sure your answer has the correct number of significant digits.

Q: 1.00 mL is taken from a stock solution of concentration 8.47 g/L and added to a 10.0 mL volumetric…

A: Given, Stock solution: Concentration of the stock solution (C1) = 8.47 g/L Volume of the stock…

Q: -1 A geochemist measures the concentration of salt dissolved in Lake Parsons and finds a…

A: Concentration of salt in Lake Parsons was found to be 25.6 g L-1. The average concentration of salts…

Q: 2+ Calculate the number of equivalents/L of Ca* in a solution that is 4.7 x 10 M in Ca. Express your…

A: Given, Concentration of Ca2+ = 4.7 × 10-2 M = 4.7 × 10-2 mol/L Equivalents/L of Ca2+ = ?

Q: A chemist prepares a solution of sodium chloride NaCl  by measuring out  4.37g  of sodium chloride…

A: Concentration in mol/L is known as molarity of the solution.It can be calculated bydividing the…

Q: A chemist prepares a solution of iron(III) bromide FeBr3  by measuring out  26.g  of iron(III)…

A: Molarity is defined as no of moles of solute per litre of solution. molarity=no of moles of solute…

Q: A chemist prepares a solution of zinc oxalate (ZnC,0) by measuring out 0.013 g of zinc oxalate Into…

A: We have given that ,  The mass of Zinc Oxalate = 0.013g Volume of Solution = 500mL =0.5 L  To find…

Q: You measure a dissolved oxygen (O2) concentration of 7.5 ppm in a river. What is the concentration…

A: Given: Dissolved oxygen concentration in water = 7.5 ppm Molar mass of O2 = 32 g/mol

Q: Following the procedure, a student recorded the initial volume of sodium hydroxide in his buret as…

A:

Q: 150 140 KI 130 120 110 100 NANO3 90 80 70 60 50 NH&CI KCI NaCi 40 30 20 10 KCIO3. Ce2(SO4)3 0 10 20…

A: Answer: At a given temperature when a solution contains the amount of solute equals to its…

Q: AGNO,(aq) + NaCI(aq) NANO,(aq) + AGCI(s) Volume of unknown Volume of 1 M NaCI Mass of AgCl (g)…

A: Welcome to bartleby ! Introduction :  We have to calculate concentration of AgNO3

Q: A chemist prepares a solution of silver nitrate (A£NO,) by weighing out 262.7 g of silver nitrate…

A: Given data Mass of Silver Nitrates, w =262.7g Volume of Solution, v       =300mL

Q: A chemist prepares a solution of sodium thiosulfate (Na,S,0,) by measuring out 271. g of sodium…

A:

Q: 15 16 17 18 19 20 21 22 23 24 26 A chemist must prepare 0.225 L of 5.00 M aqueous silver perchlorate…

A:

Q: Calculate the number of grams that would be needed to make 2.50 x 102 mL of 0.230 M KOH. Enter your…

A: Given: 2.50 x 102 mL 0.230 M KOH

Q: A chemist prepares a solution of potassium iodide KI by measuring out  72.g of potassium iodide…

A: Molarity:-                  It is the number of moles of the solute dissolved per litre…

Q: A chemist prepares a solution of potassium dichromate K2Cr2O7 by measuring out 2.0g of potassium…

A:

Q: What is the molarity of a solution prepared by dissolving 213.3 grams of Fe(OH)3 in enough water to…

A: The concentration of the solution is defined as the amount of solute present in the solution. In a…

Q: A chemist prepares a solution of silver(I) nitrate AgNO3 by measuring out 210.μmol of silver(I)…

A:

Q: A chemistry student weighs out 0.146 g of chloroacetic acid (HCH,CICO,) into a 250. mL volumetric…

A:

Q: 1a) 0.1% = ? ug/ml? Only include the number and not any units

A:

Q: What is the molarity of a solution that contains 57.7 g Naz2CO, in 4.00 L of sole In the 'Answer…

A: Titration is the quantitative method of estimating the strength of the any component. Molarity is…

Q: A solution of formic acid , HCHO2 is 23.6 M and has a density of of 1.20 g /mL. What is the…

A:

Q: A chemist prepares a solution of zinc nitrate (Zn(NO3)₂) by measuring out 75.5 μmol of zinc nitrate…

A:

Q: A chemist prepares a solution of silver perchlorate (AgCIO,) by measuring out 1.9 kg of silver…

A: Molarity is a concentration term for a solution. The molarity of the given solution is defined as…

Q: A geochemist measures the concentration of salt dissolved in Lake Parsons and finds a concentration…

A: It is given that,       Initial concentration of salt dissolved in        Lake…

Q: If 124 mL of a 1.2 M glucose solution is diluted to 550.0 mL , what is the molarity of the diluted…

A: The molarity of the given chemical solution is related to the number of moles of the solute and the…

Q: A chemist prepares a solution of sodium thiosulfate (Na, S,0,) by measuring out 1.2 g of sodium…

A: Mole can be defined as a standard unit for measuring large quantities of very small entities such as…

Q: How many grams of calcium cyanide, Ca(CN)2, are required to make 415 mL of a 0.825 M solution? SHOW…

A:

Q: A chemist prepares a solution of calcium sulfate (CaSO)4 by measuring out 0.258μmol of calcium…

A: Solution stoichiometry involves the calculation of concentration of solutions in the given…

Q: Calculate the volume of water (in mL) that must be added to 64.2 mL of a 5.92 mol/L NaClO3(aq)…

A:

Q: A student prepares a 0.54 mM aqueous solution of crotonic acid (C,H,CO,H). Calculate the fraction of…

A: Acid/base's strength (how much strong or weak) always estimated through observing percent…

Q: How many grams of oxalic acid, H2C2O4, are required to prepare 750. mL of a 0.250 M oxalic acid…

A: Molecular Wt of oxaclic acid = 1262 (no. of eq)g To find the grams of 0.25M oxalic acid needed for…

Q: When answering this problem, report the answer with the appropriate number of significant figures.…

A: Since the moles of copper(II) sulfate is coming from the copper(II) sulfate stock solution only…

Q: A chemist prepares a solution of barium acetate (Ba(C,H;O2),) by measuring out 54. g of barium…

A:

Q: A chemist prepares a solution of magnesium fluoride (MgF₂) by measuring out 0.058 g of magnesium…

A:

Q: Y Part A As a technician in a large pharmaceutical research firm, you need to produce 450. mL of…

A: part A: 450. ml of 1.00 M potassium phosphate buffer = 0.450 L * 1.00 mole / L = 0.450 mole  Let…

Q: 8. The density of methanolc acid, HCOOH Is 1.22 g/mL If 33.5 mL of methanoic acid is dissolved in…

A:

Q: Calculate the mass of MgCl2 necessary to make 500.0 mL of 1.914 M solution. Report your answer with…

A: Molarity = Number of moles/Volume in Litre Number of moles = 1.914 M × 0.500L…

Q: A 7.91 mass % aqueous solution of ethylene glycol (HOCH2CH2OH) has a density of 1.36 g/mL. Calculate…

A: Density is defined as mass per unit volume. Mathematically, it is expressed by equation (1).Molarity…

Q: How many moles of Mg(ClO2)2 are present in 60.0 mL of 1.00 M Mg(ClO2)2 solution?   Note: Answers…

A: It is given that the molarity of Mg(ClO2)2 solution is 1.00 M and the volume is 60 mL and how many…

Q: A chemist prepares a solution of aluminum chloride (AlCl3) by measuring out 35.2 g of aluminum…

A: Given: Weight of the aluminum chloride is 35.2 g. Volume is 100 mL.

Q: A chemist must dilute 29.5 mL of 11.7 µM aqueous zinc oxalate (ZnC,04) solution until the…

A: In the dilution process, the relationship between initial and final concentrations and volumes of…

Q: If you are going to dilute 125 mL of 1.50 M AgNO3 solution so that the final volume is 215 mL, what…

A: Given;

Q: A chemist prepares a solution of copper(II) fluoride  CuF2  by weighing out  0.07319g  of…

A: Mass of copper(II) flouride = 0.07319 g  Volume of water = 500 ml = 0.5 L  Concentration of…

Q: 6. Moles of NaOH dispensed (mol) 7. Molar concentration of acid solution (mol/L) 8. Average molar…

A: The number of moles of a substance is the mass of the substance upon its molar mass. The molarity of…

Q: Calculate final volume 6.8 M NaOH solution prepared from 70.0 mL of a solution that is 10.5 M…

A:

Q: One individual was told that his total blood cholesterol concentration should be less than 200.…

A: The concentration of cholestrol are given in two different units; C1 = 200mg/dL C2 = 5.2 x 10-3M It…

Q: 6.626x10*“J/s × 299,792,458 m/s 487.9×10 m

A: The given expression has been solved below in a step wise manner and the solution is provided below.

Q: Reagent nitric acid is 62.75% HNO 3 by mass and its molarity is 14.09 M. Calculate its density in…

A:

Q: A chemist adds 490.0mL of a 0.339M silver perchlorate AgClO4 solution to a reaction flask. Calculate…

A: Given that,490.0mL of 0.339M silver per chlorate solution.